Engine stalls when slowing down or at idle

[Jamie KR 0]

When decelerating or braking to a slow speed or stop, the engine stutters as if it ran out of petrol, and stalls as a result of the low fuel. It misfires frequently. It happens usually at low to medium temperatures and under extended periods of idling. Can anyone give a reason why as I could not find a simple or relevant answer.

[pragmatix 570]

I presume its a petrol, when was it last serviced? It could be as simple as needing new spark plugs or the coil pack is playing  up or a fueling problem pump /blocked filter, fault codes would be handy.